JPS62213946A - Display controlling method for numerical control machine tool - Google Patents

Abstract

PURPOSE:To enable tracing of tool behavior and to enable checking of a program in a state approximately similar to machining motion, by a method wherein tool graphics are superposed with a specified position on the tool machining route of work machining graphics for display. CONSTITUTION:Various positions on the machining route of a tool, applying machining on the given portion of a work, are specified and inputted, and graphics 16, representing a tool, is superposed at the same scale in a specified inputted position with a machining portion graphics 15 representing a work machining portion. In which case, the tool graphics 16 are displayed in a state to be superposed in various specified positions on the tool machining route of the work machining portion graphics 15. Thus, for example, if a position is specified in a manner to follow tool behavior, behavior of the tool can be grasped, and a program can be checked in a state extremely similar to machining motion. Further, the program can be checked in a state in that the more a specified position distance is decreased, the more the program is made similar to machining motion.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a display control method in a numerically controlled machine tool.

(Prior art) Numerical control (hereinafter referred to as NC) machine tools operate based on NC programs, so these NC programs must be strictly checked before use, but these NC programs are difficult to understand. Since it is written in Jd and NC languages, checking the list is difficult to understand as a machining operation and requires a great deal of time and effort.

Conventionally, graphics of a tool and a part of the workpiece to be machined by the tool are displayed on a display screen, and by comparing the shape of the tool and the shape of the part to be machined, it is possible to determine whether the tool is There is a device that allows you to check whether the part to be machined is suitable for machining.

(Problem to be solved by the invention) However, since the display only has the function of comparing the tool shape and the shape of the machined part, it is not sufficient to understand it as a machining operation. It was hard to say.

An object of the present invention is to make it possible to grasp the behavior of a tool.

(Means for Solving the Problems) Therefore, the present invention provides a method for specifying and inputting various positions on the machining path of a tool that is driven and controlled by a numerically controlled machine tool to perform machining on a predetermined part of the workpiece, and The present invention is characterized in that a tool graphic representing the tool on the same scale as the machining part graphic is placed at a designated input position and superimposed on the displayed machining part graphic.

(Function) In this configuration, the tool graphics are displayed in an overlapping state at each designated position on the tool machining path in the workpiece machining region graphics. Therefore, for example, by specifying the position while following the behavior of a tool, you can grasp the behavior of the tool, perform a program check in a state extremely close to the machining operation, and at the same time The finer the interval, the closer the program check can be to the machining operation.

(Example) Hereinafter, an example in which the present invention is applied to an NC machine tool that performs hole drilling will be described with reference to the drawings.

FIG. 1 is a system diagram of a node used to implement the method of the present invention. In this diagram, 1 is a central processing unit (hereinafter referred to as CPU), and 2 is a read-only node in which a work program is stored. Memory (hereinafter referred to as ROM),
Reference numeral 3 denotes a storage device in which a machine machining information database, such as a magnetic disk device, is stored; 4, a storage device in which a tool information database is also stored; and 5, a storage device, in which a machining part information database is also stored. 6 is a shape control unit, 7 is a display (color C/T), and 8 is a light pen/12 (see Figures 5 and 6).
It is an input device equipped with.

The machine processing information database is distributed to all NC machine tools that process a particular workpiece, and as shown in Figure 2, the machine processing information database is divided into levels l to m, as shown in Figure 2. It consists of Level 1 is composed of data TOO1, TOO2, TOO3, . . . indicating the names of tools necessary for machining the workpiece with the machine and the order in which they are used. Tsumari, T
OOl is the name of the first tool used, T002
is the name of the second tool used. The level ■ is
Each of the tools Tool, TOO2, . . . is composed of data indicating the name of the part to be machined, the name of the machining method, and the order of machining. That is, regarding Tool, data KBi 1. KBi 2. ...and data KM
i1. KMi 2. ... is given, for example KB
il is the name of the part to be processed first, and KMil is the name of the processing method for the first part to be processed. Level ■ is composed of data showing detailed information on tool behavior in each machining method. wife,! 12.TOOL processing methods KM
i 1, KM i 2. Vision 13. . . . Regarding K, data ■, ■, ■, . . . are given respectively.

The specific contents include, for example, the coordinate values of the tool reference position in the NC machine tool coordinate system.

As shown in FIG. 3, the tool information database includes tool shape data and the like corresponding to each tool name existing in the machining information database.

As shown in Fig. 4, the machining part information database includes machining part cross-sectional shape data corresponding to the name of each machining part existing in the machine machining information database, each machining part reference position in the NC machine tool coordinate system, and here, Since it is a hole, it has coordinate values of its entrance, symbolic shape data of the hole, etc.

As shown in FIGS. 5 and 6, a main coordinate system 10 and an auxiliary coordinate system 11 are provided on the screen 9 of the display 7, and the main coordinate system 10 includes a tool for performing input operations using a light pen 12. A list of names TOO1, TOO2,..., workpiece graphics 14 showing machining parts 13, 13°, etc., and various positions of the tool on the machining path (here, machining start position, machining end position, cutting A list of starting positions and cutting end positions) is displayed, and
The auxiliary coordinate system includes machining parts 13, 15. Machining part graphics 1 showing the cross section of the specified part of...
5 and the tool graphics 16 representing the tool on the same scale as the machining part graphics 15 are displayed.
It has become.

Next, the processing procedure of the system configured as described above will be explained.

First, the user selects the menu displayed on the main coordinate system 10 using the input device 8, and specifies the machining region, tool, and state of its behavior (ie, the position of the tool) to be displayed.

tb, 2-item pen 12, tool TOO1゜TOO2
, . . , for example, press ``Tool'' (operation ①) in FIG. . . . (operation ■ in Fig. 5), and finally the tool behavior state (
Operations in Figure 5 @).

When the above operations are completed, the CPU 1 calls a work program from the OM2, executes this work program, retrieves the cross-sectional shape data of the specified machining part 15 from the machining part information database, and stores the machining data in the auxiliary coordinate system 11. The part graphics 15 are displayed so that the reference position of the location corresponding to the entrance of the processing part 130 is located at the origin 0 of the auxiliary coordinate system 11.

Next, from the machining part information database, the relevant machining part 13
The coordinate values of the entrance of the machine and the coordinate values of the tool reference position in the tool behavior state are extracted from the machine processing information database, and the tool reference position in the tool behavior state with respect to the entrance position of the machining part 13 is determined. However, the coordinate value data in each database is in the NC machine tool coordinate system, so this is converted into coordinate value data in the auxiliary coordinate system 11.

Then, the tool shape data is extracted from the tool information database, and based on the coordinate value data of the tool in the auxiliary coordinate system 11 obtained in the previous step, the reference position of the tool is determined as the tool reference position in the auxiliary coordinate system 11. The tool graphics 16 is displayed on the auxiliary coordinate system 11 under control by the shape control unit 6 so that the tool graphics 16 is displayed on the auxiliary coordinate system 11.

Thereby, the positional relationship between the tool shape and the cross-sectional shape of the machined part in the specified tool behavior state can be grasped at a glance, and it can be easily determined whether or not the set tool behavior data is correct.

According to the embodiment described above, various specified items (menu) are displayed on the upper part of the display screen 9 for specifying input,
Since this is done in such a way as to make a hit with the light pen 12, the following unique effects are produced.

In other words, the conventional methods of inputting specifications include using a keyboard, and displaying each food specification item on the periphery of the display screen.
There is a method in which a switch for specifying each item is provided adjacent to the display of each specified item, and the item specification is input by operating the switch adjacent to each item.

In the former case, you can specify a wide variety of items, but the operation is complicated. In the latter case, it is easy to operate because you can input interactively, but on the other hand, there are restrictions on the display location on the display screen. It is difficult to increase the number of specified items due to restrictions on switch installation locations.

In this regard, when using this embodiment, not only is it easy to operate since it is an interactive input, but also the item display area can occupy the entire screen except for the auxiliary coordinate system, and moreover, the input switch is a light pen. Since only one is enough and there are no restrictions on the installation location, it is possible to increase the number of specified items, and to do so, it is possible to check the program in more detail and more precisely.

(Effects of the Invention) As is clear from what has been described above, according to the present invention, tool graphics are superimposed and displayed at various specified positions on the tool machining path in the workpiece machining part graphics. Therefore, it is possible to follow the behavior of the tool, and the program can be checked in a state extremely close to the machining operation.

Also, since you can set the intervals between specified positions finely,
By doing so, there is an advantage that the program check can be performed in a state closer to the machining operation.

[Brief explanation of drawings]

Figure 1 is a system diagram of the device used to carry out the method of the present invention, Figures 2 to 4 are conceptual diagrams of various databases used in the device shown in Figure 1, and Figures 5 and 6 are the structure of the display screen. FIG. 1,...CPU, 2...0M13-5...Storage device, 6...Shape control unit, 7...Display, 8
...Input device, 9...Display screen, 15...
- Machining part graphics, 16...Tool graphics. (1 other person)

Claims (2)

[Claims] (1) Specify and input various positions on the machining path of a tool that is driven and controlled by a numerically controlled machine tool to machine a predetermined part of the workpiece, and add the machining part graphic to the machining part graphic that represents the machining part of the workpiece. A tool graphic representing the tool on the same scale as the tool is placed at the specified input position and superimposed.
Display control method for numerically controlled machine tools. (2) In the numerically controlled machine tool according to claim 1, wherein the designation input is performed by displaying various designation items on a display screen and applying a light pen to the designation items. Display control method.